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Completed

NCT Number: NCT01345292

A Study of the Relief of Tooth Sensitivity of an Experimental Mouthrinse Device

This study is for people with sensitive teeth and involves going to the dentist for 4 visits over 6 weeks.

During the first 2 weeks, you will just brush your teeth two times a day with the fluoride toothpaste provided.

Then you will be assigned to a group if you qualify to continue in the study. All groups will get a marketed toothpaste and one group will also get a mouthwash with an experimental ingredient. You will have an equal chance of being assigned to any one of the three groups.

For the next 4 weeks, you will brush with your assigned toothpaste and rinse with your assigned mouthwash if assigned to the mouthwash group. A dentist will look at your mouth, teeth, tongue and gums and check for sensitive teeth. The investigators will see if the mouthwash helps to reduce tooth sensitivity during the study.

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Key information

Conditions

Dentin Sensitivity Stomatognathic Diseases Tooth Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

BioSci Research America, Inc.

Las Vegas, Nevada, 89121, United States

About this study

This is an observer-blind, randomized, parallel-group, single-center, controlled clinical trial. Approximately 246 generally healthy adults meeting the necessary inclusion/exclusion criteria will be enrolled so that 210 subjects (70 per group) would reasonably be expected to complete the study. Subjects will have their oral soft/hard tissues assessed and will be evaluated for sensitivity levels at Screening (Visit 1), Baseline (Visit 2), Visit 3 at Week 2 and Visit 4 at Week 4. During the first two weeks of the study, subjects will be instructed to brush their teeth for one minute in their usual manner, twice daily, using the provided standard fluoride toothpaste. Subjects will return for the Baseline exam and, upon qualification with entry criteria, will be assigned to one of three treatment groups. Qualified subjects will be instructed to brush their teeth two times daily for one minute in their usual manner using the provided toothpaste (standard fluoride toothpaste or 5% potassium nitrate toothpaste). Subjects assigned to the mouthrinse group will be instructed to rinse twice daily, after brushing, with the provided mouthrinse for 60 seconds using 10 ml, for 4 consecutive weeks.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Males and females at least 18 years of age in good general and oral health without any known allergy to commercial dental products or cosmetics.
  • Evidence of a personally signed and dated informed consent document indicating the subject (or legally acceptable representative) has been informed of all pertinent aspects of the trial.
  • Willingness to use the assigned products according to instructions, availability for appointments, and likelihood of completing the clinical trial.
  • The appropriate number and location of eligible teeth, based on protocol-defined standards.
  • Adequate oral hygiene (i.e., brush teeth daily and exhibit no signs of oral neglect).

Exclusion criteria

  • Any medical or dental history or condition, or use of any medication or drug, that per protocol or in the opinion of the investigator might compromise subject comfort or safety, or the analysis of study results.
  • Volunteers who have been using any of the following within protocol-defined timeframes:
  • home-care bleaching, whitening products or professional bleaching treatment
  • desensitizing agents whether prescribed or over-the-counter
  • sensitivity toothpastes, mouthwash or oral care products used for the treatment of dentinal hypersensitivity
  • Women who are pregnant, nursing or plan to become pregnant during the course of the study.

Treatment and study plan

Mouthwash

Device

Rinse with 10 ml of the assigned mouthwash for 60 seconds after you brush in your usual manner twice daily for one minute using at least a one-inch strip of the assigned toothpaste

Other names: 1.40% potassium oxalate sensitive mouthwash

Potassium nitrate toothpaste

Drug

Brush in your usual manner twice daily for at least one minute using at least a one-inch strip of the assigned toothpaste

Other names: 5% Potassium nitrate toothpaste, Sensodyne Original

Sodium Fluoride Toothpaste

Drug

Brush in your usual manner twice daily for at least one minute using at least a one-inch strip of the assigned toothpaste

Other names: Crest Cavity Protection

Primary outcomes

  1. Mean Tactile Sensitivity Score at Week 4

    Time frame: 4 weeks

    Tooth sensitivity was measured using a Yeaple probe. The force at which discomfort was felt by the participant was recorded on a scale of 10-80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant.

  2. Mean Tactile Sensitivity Score at Week 2

    Time frame: 2 weeks

    Tooth sensitivity was measured using a Yeaple probe. The force at which discomfort was felt by the participant was recorded on a scale of 10-80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant.

Secondary outcomes

  1. Mean Tactile Sensitivity Visual Analog Scale (VAS) Score at Week 2

    Time frame: 2 weeks

    Tooth sensitivity was measured using a VAS. At each visit, participants rated their perception of the pain/discomfort experienced from the Yeaple probe by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The investigator recorded a VAS score of 0 mm for participants who did not experience discomfort at the maximum force of 80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant.

  2. Mean Tactile Sensitivity VAS Score at Week 4

    Time frame: 4 weeks

    Tooth sensitivity was measured using a VAS. At each visit, participants rated their perception of the pain/discomfort experienced from the Yeaple probe by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The investigator recorded a VAS score of 0 mm for participants who did not experience discomfort at the maximum force of 80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant.

  3. Mean Cold Air Stimulus VAS Score at Week 2

    Time frame: 2 weeks

    Tooth sensitivity was measured using a Cold Air Stimulus. When being assessed, participants rated their perception of the pain/discomfort experienced when cold air was directed at the exposed root of each tooth by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The score for each participant was calculated by averaging the scores for all study teeth for that participant.

  4. Mean Cold Air Stimulus VAS Score at Week 4

    Time frame: 4 weeks

    Tooth sensitivity was measured using a Cold Air Stimulus. When being assessed, participants rated their perception of the pain/discomfort experienced when cold air was directed at the exposed root of each tooth by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The score for each participant was calculated by averaging the scores for all study teeth for that participant.

  5. Global Subjective VAS Score at Week 2

    Time frame: 2 weeks

    At each visit, participants rated their perception of the pain/discomfort experienced by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. Participants were instructed as follows: "Please rate the intensity of the pain/discomfort you have experienced in the last two weeks when drinking cold/hot beverages and/or foods, eating sweet and sour foods, breathing cold air, brushing your teeth or performing any habits/behaviors that solicit your dentinal hypersensitivity pain/discomfort since you first started using the product." The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm.

  6. Global Subjective VAS Score at Week 4

    Time frame: 4 weeks

    At each visit, participants rated their perception of the pain/discomfort experienced by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. Participants were instructed as follows: "Please rate the intensity of the pain/discomfort you have experienced in the last two weeks when drinking cold/hot beverages and/or foods, eating sweet and sour foods, breathing cold air, brushing your teeth or performing any habits/behaviors that solicit your dentinal hypersensitivity pain/discomfort since you first started using the product." The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm.

Sponsors and collaborators

Lead sponsor

Johnson & Johnson Consumer and Personal Products Worldwide

Industry

Registry information

Official study title

Assessment of a Potassium Oxalate-Containing Formulation for the Relief of Dentinal Hypersensitivity

Important dates

Study start
2011
Primary completion
2011
Study completion
2011
First posted
May 2, 2011
Registry last updated
Jun 10, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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